will not start on 2008 Ford Explorer

put key in turned on nothing tried several times still nothing then pushed down brade pedal turned on key and it started have taken this to the dealer several occasions they said they could not find anything wrong with it but it has done this on 5 or 6 times sometime the light shows psc

Asked by for the 2008 Ford Explorer
2 answers
poss loose wiring under dash, i would start there.could also be shift cable is stretched out somewhat and not going all the way into part. try wiggling shifter next time it happens
Are you using a duplicate key if so. might want to try the original key. also view if the theft is flashing on the dash when key is in the on position. note most newer model cars have anti theft systems.
If the original key has been lost have one made by the dealer by means of using the vin #